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We derive the renormalization group equations (RGE) for the flavour couplingmatrices of the effective dimension-five operators which yield Majorananeutrino masses in the multi-Higgs-doublet Standard Model; in particular, weconsider the case where two different scalar doublets occur in those operators.We also write down the RGE for the scalar-potential quartic couplings and forthe Yukawa couplings of that model, in the absence of quarks. As an applicationof the RGE, we consider two models which, based on a mu-tau interchangesymmetry, predict maximal atmospheric neutrino mixing, together with U_{e3} =0, at the seesaw scale. We estimate the change of those predictions due to theevolution of the coupling matrices of the effective mass operators from theseesaw scale down to the electroweak scale. We derive an upper bound on thatchange, thereby finding that the radiative corrections to those predictions arein general negligible.Comment: 16 pages, LaTe

Renormalization of the neutrino mass operators in the multi-Higgs-doublet standard model